Year	Years
1800	30.43
1801	30.43
1802	30.43
1803	30.43
1804	30.43
1805	30.43
1806	30.43
1807	30.43
1808	30.43
1809	30.43
1810	30.43
1811	30.43
1812	30.43
1813	30.43
1814	30.43
1815	30.43
1816	30.43
1817	30.43
1818	30.43
1819	30.43
1820	30.43
1821	30.43
1822	30.43
1823	30.43
1824	30.43
1825	30.43
1826	30.43
1827	30.43
1828	30.43
1829	30.43
1830	30.43
1831	30.43
1832	30.43
1833	30.43
1834	30.43
1835	30.43
1836	30.43
1837	30.43
1838	30.43
1839	30.43
1840	30.43
1841	30.43
1842	30.43
1843	30.43
1844	30.43
1845	30.43
1846	30.43
1847	30.43
1848	30.43
1849	30.43
1850	30.43
1851	30.43
1852	30.43
1853	30.43
1854	30.43
1855	30.43
1856	30.43
1857	30.43
1858	30.43
1859	30.43
1860	30.43
1861	30.43
1862	30.43
1863	30.43
1864	30.43
1865	30.43
1866	30.43
1867	30.43
1868	30.43
1869	30.43
1870	30.43
1871	30.43
1872	30.43
1873	30.43
1874	30.44
1875	30.44
1876	30.44
1877	30.44
1878	30.44
1879	30.44
1880	30.45
1881	30.45
1882	30.45
1883	30.45
1884	30.45
1885	30.45
1886	30.46
1887	30.46
1888	30.46
1889	30.46
1890	30.46
1891	30.46
1892	30.47
1893	30.47
1894	30.47
1895	30.83
1896	31.19
1897	31.56
1898	31.92
1899	32.27
1900	32.63
1901	33
1902	33.36
1903	30.41
1904	31.54
1905	32.65
1906	33.78
1907	34.89
1908	36.01
1909	37.13
1910	38.25
1911	38.29
1912	38.32
1913	38.35
1914	38.38
1915	38.41
1916	38.44
1917	38.47
1918	24.95
1919	38.53
1920	38.56
1921	38.79
1922	39.01
1923	39.23
1924	39.46
1925	39.68
1926	39.89
1927	40.11
1928	40.34
1929	40.56
1930	40.78
1931	41.33
1932	41.86
1933	42.4
1934	42.94
1935	43.48
1936	44.03
1937	44.56
1938	45.11
1939	45.64
1940	46.19
1941	47.68
1942	49.18
1943	50.68
1944	52.18
1945	53.68
1946	55.19
1947	56.69
1948	58.19
1949	59.69
1950	61.18
1951	61.92
1952	63.31
1953	64.55
1954	65.63
1955	66.55
1956	67.3
1957	67.93
1958	68.41
1959	68.78
1960	69.07
1961	69.3
1962	69.52
1963	69.73
1964	69.99
1965	70.27
1966	70.6
1967	70.94
1968	71.29
1969	71.63
1970	71.97
1971	72.14
1972	72.27
1973	72.41
1974	72.5
1975	72.62
1976	72.83
1977	73.17
1978	73.5
1979	73.79
1980	74.04
1981	74.19
1982	74.36
1983	74.4
1984	74.47
1985	74.03
1986	74.62
1987	74.43
1988	74.38
1989	74.22
1990	74.05
1991	73.98
1992	73.86
1993	73.99
1994	73.52
1995	73.85
1996	74.12
1997	75.04
1998	75.62
1999	75.71
2000	76.07
2001	76.26
2002	76.59
2003	76.88
2004	76.92
2005	77.05
2006	77.3
2007	77.45
2008	77.63
2009	77.86
2010	77.94
2011	78.17
2012	78.25
2013	78.36
2014	78.32
2015	78.49
2016	78.7
2017	78.89
2018	79.08